Failing to use my movie clip in flex builder

[devboy]

I'm creating a MovieClip in CS3 with a button component, expose the button to code with an instance name and export it as a swc file.
I then import that .swc into a flex project and display an instance of the movie clip. It throws this:
TypeError: Error #2007: Parameter child must be non-null.
at flash.display::DisplayObjectContainer/addChildAt()
at fl.controls::BaseButton/fl.controls:BaseButton::drawBackground()
at fl.controls::LabelButton/fl.controls:LabelButton::draw()
at fl.controls::Button/fl.controls:Button::draw()
at fl.core::UIComponent/fl.core:UIComponent::callLaterDispatcher()

If I remove the button instance name from the MovieClip the error stops but then the movie clip just loops endlessly showing the button assets.

Anyone got any idea why?

[devboy]

Let me rephrase.
Can anyone confirm success in creating a movie clip with a cs3 component embedded within it, exporting it to an external resource, then loading it in a different project and displaying?

[snowboardfoo]

I am getting the similar error at runtime in Flash cs3....

TypeError: Error #2007: Parameter child must be non-null.
at flash.display::DisplayObjectContainer/addChildAt()
at fl.controls::BaseButton/fl.controls:BaseButton::drawBackground()
at fl.controls::BaseButton/fl.controls:BaseButton::draw()
at fl.core::UIComponent/drawNow()
at fl.controls::ScrollBar/fl.controls:ScrollBar::draw()
at fl.controls::UIScrollBar/fl.controls:UIScrollBar::draw()
at fl.core::UIComponent/drawNow()
at fl.controls::TextArea/fl.controls:TextArea::updateScrollBars()
at fl.controls::TextArea/fl.controls:TextArea::drawLayout()
at fl.controls::TextArea/fl.controls:TextArea::draw()
at fl.core::UIComponent/::callLaterDispatcher()
TypeError: Error #2007: Parameter child must be non-null.
at flash.display::DisplayObjectContainer/addChildAt()
at fl.controls::BaseButton/fl.controls:BaseButton::drawBackground()
at fl.controls::BaseButton/fl.controls:BaseButton::draw()
at fl.core::UIComponent/drawNow()
at fl.controls::ScrollBar/fl.controls:ScrollBar::draw()
at fl.controls::UIScrollBar/fl.controls:UIScrollBar::draw()
at fl.core::UIComponent/::callLaterDispatcher()
TypeError: Error #2007: Parameter child must be non-null.
at flash.display::DisplayObjectContainer/addChildAt()
at fl.controls::BaseButton/fl.controls:BaseButton::drawBackground()
at fl.controls::BaseButton/fl.controls:BaseButton::draw()
at fl.core::UIComponent/::callLaterDispatcher()
TypeError: Error #2007: Parameter child must be non-null.
at flash.display::DisplayObjectContainer/addChildAt()
at fl.controls::BaseButton/fl.controls:BaseButton::drawBackground()
at fl.controls::LabelButton/fl.controls:LabelButton::draw()
at fl.core::UIComponent/::callLaterDispatcher()
TypeError: Error #2007: Parameter child must be non-null.
at flash.display::DisplayObjectContainer/addChildAt()
at fl.controls::BaseButton/fl.controls:BaseButton::drawBackground()
at fl.controls::BaseButton/fl.controls:BaseButton::draw()
at fl.core::UIComponent/::callLaterDispatcher()
TypeError: Error #2007: Parameter child must be non-null.
at flash.display::DisplayObjectContainer/addChildAt()
at fl.controls::BaseButton/fl.controls:BaseButton::drawBackground()
at fl.controls::BaseButton/fl.controls:BaseButton::draw()
at fl.core::UIComponent/::callLaterDispatcher()
TypeError: Error #2007: Parameter child must be non-null.
at flash.display::DisplayObjectContainer/addChildAt()
at fl.controls::BaseButton/fl.controls:BaseButton::drawBackground()
at fl.controls::BaseButton/fl.controls:BaseButton::draw()
at fl.core::UIComponent/drawNow()
at fl.controls::ScrollBar/fl.controls:ScrollBar::draw()
at fl.controls::UIScrollBar/fl.controls:UIScrollBar::draw()
at fl.core::UIComponent/::callLaterDispatcher()
TypeError: Error #2007: Parameter child must be non-null.
at flash.display::DisplayObjectContainer/addChildAt()
at fl.controls::BaseButton/fl.controls:BaseButton::drawBackground()
at fl.controls::BaseButton/fl.controls:BaseButton::draw()
at fl.core::UIComponent/::callLaterDispatcher()
TypeError: Error #2007: Parameter child must be non-null.
at flash.display::DisplayObjectContainer/addChildAt()
at fl.controls::BaseButton/fl.controls:BaseButton::drawBackground()
at fl.controls::LabelButton/fl.controls:LabelButton::draw()
at fl.core::UIComponent/::callLaterDispatcher()
TypeError: Error #2007: Parameter child must be non-null.
at flash.display::DisplayObjectContainer/addChildAt()
at fl.controls::BaseButton/fl.controls:BaseButton::drawBackground()
at fl.controls::BaseButton/fl.controls:BaseButton::draw()
at fl.core::UIComponent/::callLaterDispatcher()
TypeError: Error #2007: Parameter child must be non-null.
at flash.display::DisplayObjectContainer/addChildAt()
at fl.controls::BaseButton/fl.controls:BaseButton::drawBackground()
at fl.controls::BaseButton/fl.controls:BaseButton::draw()
at fl.core::UIComponent/::callLaterDispatcher()

.... but no compile errors... I think this is something to do with after I added linkage to a button in my library and deleted some unused components, as I commented out the only code addition and it is still throwing the error.... quirky and annoying.

I am a n00b when it comes to AS3/CS3 ...it kind of seems like it is trying to draw components that aren't there? anyone got any idea why this is happening? I knew i shouldn't have started playing with the components..

[snowboardfoo]

I am getting the similar error at runtime in Flash cs3....

:beer: well.. I seem to have eliminated the error pretty quickly by deleting the "component assets" folder in the library that I guess was added automatically by flash when I was messing around with some components, but not removed when I got rid of them.

I still have the text area component though, I guess that doesn't need any "assets" ... no clue really..